Vintage thick pebbled brown leather backpack

Deep chocolate brown with light brown leather accents. The leather is very thick but pliable and supple and in excellent condition. I have owned it for more than 30 years and purchased it at an estate sale. The metal toggles and buckles are slightly tarnished but I haven’t tried polishing them. Size is 12” x 12” and the bottom is 6” across. No brand or marking that I can find, but obviously good craftsmanship. Perfect for everyday use. excellent materials and excellent craftsmanship ensure long-lasting durability.